20072838 has 16 divisors (see below), whose sum is σ = 40190976. Its totient is φ = 6683400.

The previous prime is 20072837. The next prime is 20072839. The reversal of 20072838 is 83827002.

It is an interprime number because it is at equal distance from previous prime (20072837) and next prime (20072839).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7363 + ... + 9713.

It is an arithmetic number, because the mean of its divisors is an integer number (2511936).

Almost surely, 2^20072838 is an apocalyptic number.

20072838 is an abundant number, since it is smaller than the sum of its proper divisors (20118138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20072838 is a wasteful number, since it uses less digits than its factorization.

20072838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20072838 is about 4480.2720899517. The cubic root of 20072838 is about 271.7708836897.

It can be divided in two parts, 20072 and 838, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 20072838 in words is "twenty million, seventy-two thousand, eight hundred thirty-eight".